Xf new obleans



M. D. DOMINGUEZ. ELECTRICAL WATER IHEATER. APPucmou man ssnI-zi. |921.

1,437,046. Patented Nov. 28,1922.

IN VEN TOR.

M. D. DOMINGUEZ.

ELECTRICAL WAER HEATER.

APPLlcmon FILED sePLzl. |92.

1,437,046. Panted Nov. 28, 1922.

2 SHEETS-SHEET 2.

Patented Nov. 28, 1922.

VPri'ritwr OFFICE.

D. DOMINGUEZ,

OI NEW OBLEANS, LOUISI'ANA, ABSIGNOB. 0F ONE-HALF T0 V JUAN .LBGOTE 0F NEW ORLEANS, LOUISIANA.

ELFERICL 'WATER EEA-TER.

Application med September 21, 1921. Serial No. 502,115.

To all tzfolwxm. it may concern:

Be it known that I MANUEL D. Domerniz, e subject of the of Spain, residing at New Grleans, in e .plrish of Orleans and State-of Louisiana, certein new and useful' Electrical Water Heaters, lowing is e speciceton. The inventionrelates to electrical water heaters, and has as an object theprovision Improvements lin of which the fo1 of a device of this nature which -shell-be eu'.

tometc'in its action, so that it. is onlynecessary to start the flow of water to' cause seine to be-heeted and to` flow from the ontlet in this condition. i

An illustrative embodiment of the invention is shown in the accompanying drew-l inas in which- K ig. 1 is n front elevation, partly in sectionz of the device;

F1g.`2 is o. detail plan View of one of the heating elements, v

I" 3 is o. detail horizontal section on line Fig. Mis a. detail side elevation of one of the heater element casings;

Fig. 5 is a. detail view of e. modified form of the heating element showing the side view and a. plan view thereof;

Fig. 6 is a. detail -front elevation partly in central vertical section showing e modiied forni of heater and switch;

Fi 7 is a horizontal section on line 7-7 of Fig. 6;

Fig. 8 is n detail side elevation of the structure shown in Fig. 6; and

Fig. 9 is s, diagram of circuits for giving different heats.

The heating elements provided by the system are each preferably mounted on a base 1 which may be attached to any suitable support, and are enclosed in a casm heving :i perforated :ind internally t readed boss 3 at the bottom for attachment of e water pipe.

The casing 2 is shown in the form of a cylinder being enclosed at top and bottom end provided with an opening at the upper portion for the reception of the flange 'I on an internal c. linder to be described.

Concentric wizh the c linder 2- is shown e second cylinder 4 whic is entirely closed :it the bottom, and is provided with openings 5 at its top for passage of water, being ve invented.

"der 6 is provided4 whic bears the flange 7 ,of the cylinder 2 the 'ance element are supported from thetop wall of the cylinder 2 y means of the. spaces between the openin 5, which rtions are secured to the end we l of the cy nder 2.

To contain the hea. element the cylinet the top thereof, fitting into the end wall :haring conntrc therewith the inner cy inder 8, the space between cylinders 6 1and'8r'being'closed et the lower end. Ano enmg 9 into the space within the inner cy der18 isprovided for the flow of water. Water entering through the ipe connected to the boss must therefore ow upwardly between cylinders 2 and lltbrough the openings 5, in contant with the outer surface 4of the" 'cylinder 6 downwardly, through the opening 9, and upwardl in contact with theinner surface of cy der 8, ancylvill then pa out the 4opemn' g 10, into w o in 1e ies 47 01:48 are threaded?m g P p The resistance element 1 2 shown in l is contained in the space between c linders 6 and 8, end therefore heats the w s of both of these cylinders. This resistance element is preferably formed of nickel or en alloy thereof providing a. suitable resistance to become heated upon the passage of an electric current therethrough. To carry the heating element a porcelain s ool 11 is preferably provided upon which 51e heating element may be wound, or the element ma be preformed and placed upon the spool uiteiwards. Prefera 1y o. mica. insulating sleeve 15 is supplied surrounding the resistance element for the pur ose of insulating the same. The resistancev ement may be used as e whole, or it moy be connected so es to be used in sections as shown in Fig. 9 to be described hereafter. The ends of the resistshown connected to poles 13, to which the wires supply' current to the device may be attached. I desired the )orcelain spool 11 may be provided with n. io 'tudinel passagewa. 14 formed in its wa. for the passage o the Wire from the terminal 13 to the end of the heating elementl at the lower end of the spool. The spool 11 preferably, in addition to collars at the end thereof to enclose the heating element is provided with a collar 99 et its center, llars being slightly greater in exe co tent then the thickness of the heating element, so that the :nica sleeve 15 will be slightly spaced from the heating element ereby.

The main supply pipe for the water to be heated by the device is shown at 161 and is provided with a out on valve at 17. To pro vide for automatic action of the heating element a valve 1S is connected in the supply pi e, which vulve is provided with al removperforation in which the abe pl 19 to give access to its interior. Within t e valve 18 is a cylinder 20 having openings 23 at its lower portion and at 24 a flan e or inwardly pro1ecting radial sections t ereof to limit the upward travei of the disk 21. To prevent rotation of the disk-21 a rib 22is formed integral with the wall of the cylinder 20 and a groove is provided inthe disk 21 to conct therewith.

Extending upwardly from the disk 21 is a plunger rod 25 which emerges from the casing. of the valve 18, through a stuling box 26-27 of well known form. To su port the switch member for control of e current there are shown arms 28, preferably formed integra-l with a portion of the valve casing .18 upon which arms are supported posts 29, having the cross-bar 30 throu l1 a plunger ro 25 which it is guided. A spring- 31 bears upon the bar 30 and against washer 32.heId-by a nut 33 threaded upon the g'mger rod'25 `to hold the plunger rod and k 21 normally in its uppermost position. Then water is allowed toy flow because of the opening of an outlet faucet of the system the pressure being relieved within the heating elements will result in unbalulnced pressure upon the disk 21, and cause the same to descend with compression oi spring` 31 until the water flows out of the open works and by i 23. narried by the npper end of plunger 25 and insulated there rom by means of an in- Sulting element 34 is u cross-bar 35 carrying at one end a binding screw 36 for attachment of a iiexible conductor 45. Mounted upon the other end of the bar is a needle 3S secured to said bar at 37 and projectininto a mercu cup 39, referably of r ass, which cup 1s supporte upon the bar by an insulating element 41. A

terminal 40 has electrical connection with the mercuryr in the cup 39, and provides uttachment for the wiring to the heating elements.

Preferably the surface of the mercury in the cup 89 is covered with an inert substance, such as glycerine, to prevent oxidizetion.

The current to the system is received through wires 42 to the main cut-out 43. From pole 46 a wire is conducted to one terminal of each of the resistance elements 12 which are connected in parallel therewith. From the other terminal a wire is connected to the terminal 40. The connectedto any number of outlet faucets arranged Ln any desired location, and when none of the faucets are open the pressure on, the tngo sides of disk 21 will be balanced and the sprinfr 31 vrill liold the switch 58-39 open. s so'on however as faucet 49 is opened disk 2l will be depressed to close the switch 38-39: and cause the heating elements to be heated tot` thereby warm the water. Leakage about disk 21 will allow the switch to be opened when the faucets 49 have been closed.

A modified form of heating element is shown in Fig. 5, which comprises a porcesupport: comprising longitu pipe 48 may be lain skeleton dinal mds 51 having annular end pieces 'rovided with radial grooves 52 connected vin the surface of the annular member by a circular groove 54 in which the wire connecting the longitudinal vhelices 53 may lie so as to bring them belowthe surface of the annular members. With this form of device it is. possible to cause-the two terminals of the heating element to lie atthe same end of the support so as to render unnecessary .Isuch an expedient as the` passage 14 in Vhile F ig. 1 illustrates two heatn devices arranged in parallel electrically for the fluid to pass therethrough in series, it will be understoodv that any number greater than two muy be used, or if desired one only, depending upon the service required.

The modified form of device shown in Fig. G comprises attaching member 55 to be secured to u suitable support. An, external cylinder 56 having concentric therewith a second cylinder 57 which is shown as provided wit-h radial elements 58 to space the same from the outer cylinder 56, und with nu end member 59 passing to the end wall of the cylinder 56, to provide un opening therethrough for the attachment of the water outlet.

A third concentric cylinder 6l is shown as contained within cylinder 57 and spaced therefrom by means of radial elements 62, 63 and 64 carried by cylinder 57. elements 62 are located upon the end of said cylinder 57 and are spaced apart tof-provide for free pass e of water to the interior of cylinder 57. iLhe elements 63 and 64 are placed respectively at the center and at the lower end of the c linder 61. The cylinder 57 is closed at its lower end :uid is open at its upper end, being provided with a flange to seat within the end wall of the cylinder 5G. The liquid does not have access to the interior ol the inner cylinder 61. which contains only the heating element.

An inlet pipe 60, is preferably formed in tegral with the wall of the cylinder 56 for passage of the water supply thereto.

The heating element shownin Fig. 6 coinprises an uncla-zed orcelain element 66 i I: Whicn is shown as hollow and closed at its upper part and carryin a spiral helix 67, being insulated from 51e cylinder 61 by means a mica sleeve 65. The terminals vor the heating element are shown at 68 to which the wires Eli-92 are connected.

To operate the switch in this form of the device a plunger TO is seated in a recess communicating with the fluid passage 59. The plunger rod i2 connected with said plunder` passes out through a stuing box 74 an is held in the position shown in Fig. 6 by means of a spring 'i having abutment against bar "(6 supported by posts 75 from the 1cody of the stulling box, and having action upon the plunger rod 72 by means of a washer "ZS secured thereto. To limit the downward movement of the plunger rod 72 a pin S is shown impinging upon the bar 75. Carried bv the upper end of the plunger rod '72 is a bar S8 passing through a loop S2 from the plunger rod 72 by means of an insulating element 8l.

Blades 84. are supported upon the bar 7G by means of an insulating element 85 and have an electric binding screw connected tiereu'ith, as shown in Fig. S. To the other end o' the bar S3 a flexible conductor 86 is connected, being attached to a connecting bar ST and insulating therefrom by means oi' an insulating elementI 8S. lVires 91-92 connect the terminals GS with the switch S-Sil and with the current supply.

Outlet 'faucets 96 which may be of any number ol" locations are shown connected to the device by means of the pipe 95 and a union at 9e. The water supply pipe 98 is shown also connected to the device by means f a union 9T. When the outlet 'faucets 96 are all closed the interior of the device will be under Water supply system ressure, and the plunger 70 will be pressed ack into its cylinder, thereby opening the switch 83-84 and cutting oft' the current from the heating element. When any faucet is open the pressure within the casing of the device will be reduced, allowing the spring 7T to close the circuit, to thereby heat the water which flows through the device. H it is desired to make the de 'ree of heat supplied to the water controllab e the circuits shown in Fig. 9 may be adopted wherein the resistance elements 12 are shown as provided with connections 104--100 and 101, dividing the element into thirds. By manipulation of the switch arms i021(13 any desired portion of the elements 12 may be utilized with consequentl change in the temperature supplied to the water.

Minor changes may be made in the physical embodiment of the invention Without departing from its spirit.

llhat I claim is:

1. An electrical water heater comprising, in combination, a reservoir comprising side and end walls, a cylinder within said reservoir having -a closed and an open end the open end spaced Jfrom one end wall of said reservoir, said reservoir having an opening in said last named end Wall, a cylinder seatv ed in said opening, an electrical heating element in said last named cylinder, means for admitting water to said reservoir exterior of said first named cylinder and means for egress of water from said cylinder adjacent its closed end.

2. An electrical water heater comprising, in combination, a reservoir, having side and end walls and an opening in one end wall, a cylinder within said reservoir closed at one end and having its open end spaced from an end Wall of said reservoir, a cylinder seated in said opening with its end adjacent the closed end ott said first named cylinder, a cylinder concentric with said second named cylinder to provide an annular space closed at its inner end, an electrical resistance element in said space, a water inlet pipe admitting water to said cylinder, a water outlet pipe connected to said last named cylinder.

MANUEL D. DOMINGUEZ. 

